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प्रश्न
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उत्तर
The sound heard after reflection from a rigid obstacle (such as cliff, a hillside, a wall of a building, edge of a forest etc.), is called an echo.
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संबंधित प्रश्न
A wire of length 80 cm has a frequency of 256 Hz. Calculate the length of a similar wire under similar tension, which will have frequency 1024 Hz
A certain sound has a frequency of 256 hertz and a wavelength of 1.3 m.
1) Calculate the speed with which this sound travels
2) What difference would be felt by a listener between the above sound and another sound traveling at the same speed, but of wavelength 2.6 m?
Name two sound absorbing materials (or objects) which can make our big room less echoey.
Draw a labelled diagram to show the multiple reflections of sound in a part of the stethoscope tube.
Point out the waves from the given list, i.e., light, sound, radio waves, ultrasonic waves, and thermal radiation, the energy is propagated by mechanical waves.
A cork piece is floating on the surface of the water in a pond. A piece of pebble is dropped into the water. What will be your observation?
Why is an echo not heard when the distance between the source of sound and reflection body is less than 10 m?
A sound wavelength of 0.332 m has a time period of 10−3 s. If the time period is decreased to 10−4 s, calculate the wavelength and frequency of the new wave.
What is mean by the reflection of sound?
The direction of the incident sound, the direction of reflected sound, and the normal are in different Planes.
